A = class()

function A:init()
    self.x = nil
end

function A:draw()
    gc:drawString(self.x, 0, 0, "top")
end

B = class()

function B:init(a, x)
    a.x = x
end

a = A()
b = B(a, 42)
a:draw() -- this would print 42 on the screen